Soil Moisture and Ocean Salinity (SMOS) Satellite Forms Three-pointed Star In The Sky Nov 4, 2009
Like the Very Large Array, the SMOS instrument also forms a Y-shape and through a process of interferometry the 69 small antenna receivers mimic a much larger antenna. SMOS mimics the 'Very Large Array. (Science Daily)
SMOS forms three-pointed star in the sky Nov 4, 2009
To achieve this, radio astronomers combined 27 radio telescopes, each 25 m in diameter, and deployed them on a Y-shaped track that can be extended up to 35 km. This is known as the Very Large Array in New Mexico, US. Like the Very Large Array, the SMOS instrument also forms a Y-shape and through a process of interferometry the 69 small antenna receivers mimic a much larger antenna. The deployment of the SMOS arms marks another significant milestone for ESA's mission. (Scientific American)
Two new ESA satellites successfully lofted into orbit Nov 2, 2009
MIRAS is an interferometer that connects together 69 receivers mounted on three deployable arms to measure the temperature of the reflection of the Earth's surface in the microwave frequency range. This temperature is linked to both the actual temperature of the surface and its conductive characteristics, which are in turn linked to soil moisture for land surface and to water salinity for sea surface. (Scientific American)
New Celestial Map Gives Directions For GPS Oct 31, 2009
Ma led a three-year effort to update and improve the precision of the ICRF map by scientists affiliated with the International Very Long Baseline Interferometry Service for Geodesy and Astrometry (IVS) and the International Astronomical Union (IAU). Called ICRF2, it uses observations of approximately 3,000 quasars. (Science Daily)
How To See a Black Hole Oct 27, 2009
The nifty trick that puts this ambitious goal within reach is called very long baseline interferometry. VLBI involves two or more radio dishes that are spaced as far apart as possible for example, in Arizona and Hawaii. (SkyAndTelescope.com)
Field experiment on a robust hierarchical metropolitan quantum cryptography network Oct 16, 2009
As the authors said in the paper that "In the process of QKD industrialization, the stability of the QKD system and the networking techniques are two heavy cruxes.", the Wuhu QCN implements the Faraday-Michelson Interferometer (FMI) system, an unidirectional QKD scheme with the strict proof of its security and stability which can auto-compensate the influence of the birefringence in the transmitting channel that will jeopardize the performance of QKD system. Several field demonstrations of KLQI... (EurekAlert!)
Nano Measurement In The Third Dimension Oct 14, 2009
A precision interferometer has been developed to exactly measure this property. With this. (Science Daily)
Femtoseconds lasers help formation flying in space Oct 3, 2009
Another mission, called LISA (Laser Interferometer Space Antenna) is being planned to look for gravity waves. This will involve three craft flying approximately 5 million km apart. (EurekAlert!)
Double Nucleus Galaxies: Ravenous Black Holes Sep 15, 2009
The Laser Interferometer Space Antenna (LISA) a suite of three satellites spaced five million kilometres apart and planned for launch in 2018 is being designed to search for such ripples as they pass through our solar system. While the Swinburne research has greatly increased the chance of observing some of the more bizarre events in our Universe, it also has some immediate consequences for astronomers. (Science Daily)
Raging Fire Threatens Mount Wilson Sep 3, 2009
Includes late updates. While nothing is ever guaranteed in fires like this. (SkyAndTelescope.com)
Listening for Gravity Waves, Silence Becomes Meaningful Aug 27, 2009
Those limits, the researchers say, can refine or even rule out cosmological models that predict large backgrounds originating from processes in the early universe, and more implications should be forthcoming as the experiment, known as the Laser Interferometer Gravitational-Wave Observatory (LIGO), ramps up in sensitivity ... LIGO comprises two observatory sites, in Washington State and Louisiana, each of which hosts an L-shaped laser interferometer with four-kilometer-long arms. (Scientific American)
Echoes Of The Birth Of The Universe Aug 20, 2009
20, 2009) An investigation by the LIGO (Laser Interferometer Gravitational-Wave Observatory) Scientific Collaboration and the Virgo Collaboration has significantly advanced our understanding the early evolution of the universe ... The LIGO and GEO instruments have been actively searching for the waves since 2002; the Virgo interferometer joined the search in 2007 ... The analysis used data collected from the LIGO interferometers, a 2 km and a 4 km detector in Hanford, Washington, and a 4 km... (Science Daily)
Fujitsu Optical Components and Furukawa Electric to Jointly Develop Integrated Receivers for 40Gbps and 100Gbps Optical Networks Aug 19, 2009
The receiver part for DQPSK(2) modulation transmitting 2 bits per symbol consists of the delay line interferometer(3) and the balanced receivers(4), and the receiver part for DP-QPSK(5) modulation of digital coherent detect consists of 90 hybrid (optical mixer)(6) and the balanced receivers, which are installed as discrete components that are connected by fibers ... Moreover, since the structures of delay line interferometer and optical mixer grow in complexity in DQPSK and DP-QPSK modulations,... (JCN Network, Japan)
Fujitsu Introduces Compact Integrated DPSK Receiver for 40Gbps Optical Networks Aug 12, 2009
7W), compact Integrated DPSK Receiver with a delay line interferometer and a balanced receiver ... Integration of Delay Line Interferometer and Balanced Receiver ... The delay line interferometer and balanced receiver had previously been individually packaged and used in connecting two optical fibers. (JCN Network, Japan)
NRL scientist receives patent for rugged-lightweight spectrometer assembly Jul 23, 2009
This is a schematic diagram of the Spatial Heterodyne Hpectrometer (SHS) Interferometer. Naval Research Laboratory (NRL) Space Science Division scientist, Dr. Christoph R. Englert, is awarded patent by the United States Patent and Trademark Office for a more cost effective, rugged and lightweight compression assembly design for spatial heterodyne spectrometer (SHS) interferometer applications ... This innovative design approach introduces the flexibility of exchanging optical components while... (EurekAlert! -- Business News)
Quantum goes massive Jul 16, 2009
An astrophysics experiment in America has demonstrated how fundamental research in one subject area can have a profound effect on work in another as the instruments used for the Laser Interferometer Gravitational-Wave Observatory (LIGO) pave the way for quantum experiments on a macroscopic scale ... Laser light is used to monitor relative displacements of interferometer mirrors, which are suspended as pendulums to act as quasi-free test masses ... Observing quantum mechanical behaviour of the... (EurekAlert!)
Simulations Illuminate Universe's First Twin Stars Jul 10, 2009
"This opens a whole new realm of research possibilities. These stars could evolve into two black holes, which could have created gravitational waves we could detect with an instrument like the Laser Interferometer Gravitational Wave Observatory and, if they fall into bigger black holes, for the Laser Interferometer Space Antenna. Or one of the stars could evolve into a black hole that could create gamma-ray bursts that we could detect with the Swift mission and the Fermi Gamma-ray Space... (Science Daily)
All S&T News Blogs Jul 5, 2009
Contributor Guidelines. Advertising Information. (SkyAndTelescope.com)
Caltech scientists create nanoscale zipper cavity that responds to single photons of light Jun 5, 2009
Such considerations were part of the development of gravity-wave detectors like the Laser Interferometer Gravitational-Wave Observatory (LIGO). These sorts of interferometer-based detectors have also been used at much smaller scales, in scanning probe instruments used to detect or image atomic surfaces or even single electron spins ... "LIGO is a huge multikilometer-scale interferometer," notes Painter. (EurekAlert!)
NASA research grants include mine lab work Jun 1, 2009
Andre G. Petukhov, Department of Physics, and William M. Roggenthen, Department of Geology and Geological Engineering, School of Mines, and Dongming Mei, Department of Physics and Earth Sciences, University of South Dakota, "Atomic Interferometry based Subterranean Gravimetry at DUSEL," Advanced Aerospace Materials and Devices, NASA Ames Research Center, and Department of Physics, Stanford University. Sookie S. Bang, Department of Chemical and Biological Engineering, School of Mines, and Cynthia... (Rapid City Journal, SD)
Healing wounds with lasers, vehicles that drive themselves, other cutting-edge optics May 27, 2009
In an interferometer, light waves travel by two different paths, directed from place to place by strategically places mirrors, and converge at a detector, where they produce a striped interference pattern ... The quality of the interferometer depends on the positions of the mirrors being precisely stable ... H. Jeff Kimble of Caltech will describe a new effort to counteract thermal noise and improve the sensitivity of interferometers. (EurekAlert!)
NIST's LIDAR may offer peerless precision in remote measurements May 25, 2009
NIST's LIDAR design derives its power from combining the best of two different approaches to absolute distance measurements: the time-of-flight method, which offers a large ambiguity range, and interferometry, which is ultraprecise. The LIDAR relies on a pair of optical frequency combs, tools for precisely measuring different colors (or frequencies) of light. (EurekAlert!)
National Science Foundation requests $7.045 billion for fiscal year 2010 May 15, 2009
Advanced Laser Interferometer Gravitational Wave Observatory: $46. 30 million. (EurekAlert! -- Business News)
First Two ALMA Antennas Successfully Linked May 14, 2009
ALMA will operate as an interferometer, capturing millimetre and submillimetre wavelength signals from the sky with multiple antennas, and combining them to create extremely high resolution images, similar to those that would be obtained by a single, giant antenna with a diameter equal to the distance between the antennas used ... The astronomers measured the distinctive fringes a regular pattern of alternating strong and weak signals detected by the interferometer as the planet moved across the... (Science Daily)
Arctic Trek To 'Break The Ice' On New NASA Airborne Radars May 5, 2009
One of the radars, the L-band wavelength Uninhabited Aerial Vehicle Synthetic Aperture Radar, or UAVSAR, calibrates and supplements satellite data; the other is a proof-of-concept Ka-band wavelength radar called the Glacier and Land Ice Surface Topography Interferometer, or GLISTIN.. Both radars use pulses of microwave energy to produce images of Earth's surface topography and the deformations in it. (Science Daily)
Scholars, visiting faculty, leaders represent Chicago as AAAS fellows May 1, 2009
He is currently a member of an international scientific collaboration to design and build the Laser Interferometer Space Antenna. Expected to launch in the next decade, the satellite-based LISA mission will explore and measure the universe using gravitational waves. (Univeristy of Chicago Chronicle, IL)
Astronomers Spy Oldest Object In Universe Apr 29, 2009
You mentioned interferometry and spectral shift measures, but even this estimation is complicated by what hydrogen gas in the optical path might do to values. Posted by alphaa10000 at 12:09 AM : Apr 29, 2009. (CBS News)
Spacecraft to seek Earth-like planets Apr 9, 2009
NASA's planning two missions that may be able to do just that: the Space Interferometry Mission (SIM) and the James Webb Space Telescope (JWST). Share this on. (CNN -- Tech)
Network Turns Soldiers' Helmets Into Sniper Location System Apr 3, 2009
The ISIS team has recently solved this problem by adding an inexpensive radio chip that allows them to track the relative position of nodes using high-precision radio interferometry. The university has patented the technique that ISIS developed. (Science Daily)
Orbiting Pulsars @ Home Mar 27, 2009
Einstein@Home searches for their signals in data from the Laser Interferometer Gravitational wave Observatory (LIGO) and the British-German GEO-600 gravitational wave observatory. Now, the software has been expanded to comb data from the in Puerto Rico to look for star systems that boast at least one pulsar a spinning neutron star that shines bright beams of light from its poles. (SkyAndTelescope.com)
ViaLogy Technology Delivers Large Oil Find Mar 23, 2009
QuantumRD is a computational technology based on ViaLogy's patented Quantum Resonance Interferometry (QRI(TM)), an active signal processing technique capable of significantly increasing the signal to noise ratio of seismic data and improving its value. Commenting on the Galba Prospect find, Atascosa's Chief Executive, John Mullins, said: "We're very pleased with the success of this well. We have increased our lease positions at the prospect, and are planning to further grow our collaboration... (PR Newswire)
European Satellites Provide New Insight Into Ozone-depleting Species Mar 10, 2009
Despite the detection of bromine monoxide (BrO) in the atmosphere some 20 years ago, bromine nitrate (BrONO2) was first observed in 2008 when scientists from the Karlsruhe Institute of Technology discovered the gas s weak signal with data from MIPAS (the Michelson Interferometer for Passive Atmospheric Sounding). "By comparing the novel MIPAS BrONO2 dataset with model calculations and BrO measurements by SCIAMACHY on Envisat, our general understanding of stratospheric bromine chemistry has been... (Science Daily)
Narrabri's Australia Telescope Comp... Mar 4, 2009
The Australia Telescope Compact Array at Narrabri is the first millimetre-wave interferometer in the Southern Hemisphere ... The Australia Telescope was originally suggested in 1974-75 as an interferometer based at Parkes to extend the existing Parkes Radio Telescope s power ... The Compact Array became the first millimetre-wave interferometer after new space-age technology was installed and tested on 30 November. (Suite101.com)
40-year Mystery Revisited: Newtonian System Mimics 'Baldness' Of Rotating Black Holes Feb 26, 2009
" This will have implications for gravitational-wave astronomy, he says, because the signal from such events may be detectable by the advanced LIGO-VIRGO-GEO network of ground-based laser interferometric detectors or by the proposed space-based LISA (Laser Interferometer Space Antenna). Will, who is also a visiting associate at the Institute of Astrophysics in Paris, is a theoretical physicist whose research interests encompass the observational and astrophysical implications of Einstein's... (Science Daily)
NASA's New Satellite Aims to Solve a Climate Change Mystery Feb 24, 2009
In orbit it will be part of the "A-Train" of NASA satellites and will help supplement the data gathered by the (GOSAT or "Ibuki" to the Japanese), which uses an interferometer to measure levels of both CO2 and methane, another powerful greenhouse gas. For the next few months, scientists will perform instrument checks and validate the data as well as boost OCO to its operational orbit before data starts flowing in the fall, according to Ralph Basilio, OCO deputy project manager at JPL.. (Scientific American)
Outer planets choice is narrowed Feb 19, 2009
There are joint Esa/Nasa proposals on the table for a next-generation X-ray telescope, known as the International X-ray Observatory (Ixo); and for a mission to study gravitational waves in space, known as the Laser Interferometer Space Antenna (Lisa). These concepts are trying to win the same funding opportunity. (BBC News -- Science)
China, Japan build "sharp eyes" for further space observations Feb 11, 2009
Japan's VSOP-2, second generation of the VLBI (Very Long Baseline Interferometry) Space Observatory Program scheduled to launch in 2012, would further expand the baselines between the telescopes. Armed with other advantages over the first generation such as higher observing frequencies and increased bandwidths, the VSOP-2 would gain higher resolution and sensitivity. (Xinhuanet, China)
Laser-sculpted Optical Devices For Future Giant Telescopes Feb 10, 2009
The field has experienced 10 years of breakthroughs in photonics instrumentation to enable the extent of today's interferometry and measurements. Fingernail-sized chips have been manufactured to manage the beams coming from up to three telescopes of existing interferometric arrays and are being considered for up to a six telescope beam combination in the coming years. (Science Daily)
A Supermassive Double Black Hole? Feb 8, 2009
In this symbolic illustration, LISA (the Laser Interferometer Space Antenna) measures slight ripples in spacetime from a black-hole merger billions of light-years away. LISA will consist of three stations 5 million km apart in solar orbit, linked by laser beams monitoring changes in their separations much smaller than the width of an atom. (SkyAndTelescope.com)
Astronomers get double pulsar's measure Feb 7, 2009
The technique, known as very long baseline interferometry (VLBI), simulates a radio telescope with a diameter equal to the area covered by the telescopes in the network. Deller and colleagues used the software to examine a double pulsar, named J0737-3039A/B.. (ABC Science Online)
Super-resolution Microscopy In 3-D Feb 7, 2009
Janelia Farm scientist Harald Hess and his colleagues adapted that technique, known as interferometry, to make it compatible with the fluorescent molecules often used by biologists to visualize proteins. When interferometry is combined with the super-high resolution photoactivated localization microscopy (PALM), researchers can see the three-dimensional architecture of cellular structures in extraordinary detail ... Hess, who spent 10 years working in the data storage and semiconductor... (Science Daily)
First North American antenna enables the ALMA Observatory to do its thing Feb 7, 2009
The process, called "interferometry," involves analysis of the ways in which the signals coming from each antenna interfere with one another. "This is a major milestone for the ALMA project," explained Philip Puxley, NSF's ALMA program manager. (EurekAlert!)
Holographic Universe: Discovery Could Herald New Era In Fundamental Physics Feb 7, 2009
Professor Dr. Karsten Danzmann, director of the Hannover Albert-Einstein-Institute, said: "We are very eager to find out what we can learn about the possible holographic noise over the course of the coming year. GEO600 is the only experiment in the world able to test this controversial theory at this time. Unlike the other large laser interferometers, GEO600 reacts particularly sensitively to lateral movement of the beam splitter because it is constructed using the principle of signal recycling.... (Science Daily)
Powerful New Technique Measures Asteroids' Sizes And Shapes Feb 7, 2009
Delbo and his colleagues have devised a new method that uses interferometry to resolve asteroids as small as about 15 km in diameter located in the main asteroid belt, 200 million kilometres away. This is equivalent to being able to measure the size of a tennis ball a distance of a thousand kilometres. (Science Daily)
Scattered Light Rapidly Detects Tumor Response To Chemotherapy Feb 7, 2009
The light-scattering technology is known as angle-resolved low coherence interferometry (a/LCI). In this process, light is shined into a cell sample and sensors capture and analyze the light as it is scattered back. (Science Daily)
